Patent US3221378A successfully refreshed from Google Patents.
US3221378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens blocking method and device
Assignee: Bausch and Lomb Inc
•
Filing: 1963-01-02
•
Granted: 1965-12-07
•
Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 Kenneth D Faas
- 👤 Schrier Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:59
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/005; B24B13/0052; Y; Y10; Y10S; Y10S425/00; Y10S425/808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
AN APPARATUS FOR MAKING A LENS BLOCK ON A TORIC LENS SURFACE COMPRISING MEANS FORMING A MOLD CAVITY, MEANS SLIDABLY MOUNTED IN SAID MOLD FOR MOLDING A REFERENCE SURFACE A PREDETERMINED DISTANCE FROM A POINT ON THE TORIC SURFACE, FOUR PINS ANGULARLY SPACED IN SAID MEANS FORMING SAID MOLD CAVITY FOR DIRECTLY ENGAGING THE TORIC SURFACE OF SAID LENS ON MERIDIANS INTERMEDIATE THE MERIDIANS OF MAJOR AND MINER CURVATURE OF SAID LENS ESTABLISHING THE POSITION OF THE BLOCKED LENS SURFACE RELATIVE TO THE MOLD, A DEFORMABLE SEAL HAVING HOLES FOR RECEIVING SAID PINS CONFORMING TO THE TORIC SURFACE AND SEALING SAID MOLD CAVITY, MEANS FOR TILTABLY ADJUSTING THE AXIS OF THE LENS BLANK RELATIVE TO THE AXIS OF SAID MOLD BY PROVIDING RELATIVE AXIAL MOVEMENT OF SAID PINS, AND MEANS FOR INTRODUCING A MOLTEN METAL TO BOND A LENS BLOCK HAVING A REFERENCE SURFACE ON SAID LENS.
Claim 2
Independent Claim
147 words
AN APPARATUS FOR MAKING A LENS BLOCK ON A TORIC LENS SURFACE COMPRISING MEANS FORMING A MOLD CAVITY, MEANS SLIDABLY MOUNTED IN SAID MOLD FOR MOLDING A REFERENCE SURFACE A PREDETERMINED DISTANCE FROM A POINT ON THE TORIC SURFACE, FOUR PINS ANGULARLY SPACED IN SAID MEANS FORMING SAID MOLD CAVITY FOR DIRECTLY ENGAGING THE TORIC SURFACE OF SAID LENS ON MERIDIANS INTERMEDIATE THE MERIDIANS OF MAJOR AND MINER CURVATURE OF SAID LENS ESTABLISHING THE POSITION OF THE BLOCKED LENS SURFACE RELATIVE TO THE MOLD, A DEFORMABLE SEAL HAVING HOLES FOR RECEIVING SAID PINS CONFORMING TO THE TORIC SURFACE AND SEALING SAID MOLD CAVITY, MEANS FOR TILTABLY ADJUSTING THE AXIS OF THE LENS BLANK RELATIVE TO THE AXIS OF SAID MOLD BY PROVIDING RELATIVE AXIAL MOVEMENT OF SAID PINS, AND MEANS FOR INTRODUCING A MOLTEN METAL TO BOND A LENS BLOCK HAVING A REFERENCE SURFACE ON SAID LENS.
References Cited (Backward Citations)
US3118198A
Cited
US3049766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |